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<?php var_dump(substr("a",0,10)); var_dump(substr("a",0,0)); var_dump(substr("",0,10)); var_dump(substr("",0,0));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/RhdvD
function name:  (null)
number of ops:  21
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                                   'var_dump'
          1        FRAMELESS_ICALL_3                substr              ~0      'a', 0
          2        OP_DATA                                                      10
          3        SEND_VAL                                                     ~0
          4        DO_ICALL                                                     
    4     5        INIT_FCALL                                                   'var_dump'
          6        FRAMELESS_ICALL_3                substr              ~2      'a', 0
          7        OP_DATA                                                      0
          8        SEND_VAL                                                     ~2
          9        DO_ICALL                                                     
    5    10        INIT_FCALL                                                   'var_dump'
         11        FRAMELESS_ICALL_3                substr              ~4      '', 0
         12        OP_DATA                                                      10
         13        SEND_VAL                                                     ~4
         14        DO_ICALL                                                     
    6    15        INIT_FCALL                                                   'var_dump'
         16        FRAMELESS_ICALL_3                substr              ~6      '', 0
         17        OP_DATA                                                      0
         18        SEND_VAL                                                     ~6
         19        DO_ICALL                                                     
         20      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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